NIST Manuscript Publication Search This report provides technical documentation of how NIST reconstructed the effects of the events on September 11, 2001 on WTC 7. This includes how the fires that followed the impact of debris from the collapse of WTC 1 (the north tower) led to the collapse of WTC 7; an evaluation of the building evacuation and emergency response procedures; what procedures and practices were used in the design, construction, operation, and maintenance of the building; and... Source: http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861611
NIST Manuscript Publication Search This report summarizes the collection and analysis of visual material used for the National Institute of Standards and Technology (NIST) World Trade Center (WTC) Investigation. The task consisted of four major subtasks: 1) identification, collection, data basing, and cataloging of visual material, 2) timing of material incorporated into the NIST visual database, 3) development of fire time lines and additional analyses based on the visual material, and 4)... Source: http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101356
NIST Manuscript Publication Search This report describes the provisions that were used to design and construct World Trade Center 1, 2, and 7. Included is a summary of the major provisions in the codes and standards together with the loads and load combinations that were used to design the buildings. Methods used to proportion structural members and other components of the buildings are also discussed, as well as tests that were performed to support the design. It is shown that the loads that... Source: http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101334
NIST Manuscript Publication Search The collapse of World Trade Center (WTC) 1, 2, and 7 resulted from structural damage from direct and indirect effects of aircraft impact and the ensuing fires. Thus, for collapse analyses of these buildings, knowledge of the physical state of the structural and fire safety systems prior to the aircraft impact is essential. To obtain information for the collapse analysis of the buildings, National Institute of Standards and Technology reviewed design and... Source: http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909013
byZarghamee, M. S.; Kitane, Y.; Erbay, O. O.; McAllister, T. P.; Gross, J. L.
NIST Manuscript Publication Search Simpson Gumpertz & Heger Inc (SGH) developed global models of the World Trade Center (WTC) towers using finite elements to gain an understanding of the roles of the aircraft impact damage and the subsequent fires in the WTC towers with respect to structural stability and sequential failures of components and subsystems and to determine the probable sequence of structural responses that led to initiation of global collapse. The study was conducted as part... Source: http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101366
Photographer: Richard Peskin View Direction: north Shot From: 40 Harrison St. 39th fl, Harrison and Greenwich Duration: 110.0767 File Size: 410,180,900 bytes (391.18 MB) Time Uncertainty: 1 Date Recorded: 2001-09-11 17:21:09 Topics: Building, Other Building, WTC 7 Collapse